This paper describes a sequence of residual stress measurements made to determine a two-dimensional map of biaxial residual stress in a stainless steel weld. A long stainless steel (316L) plate with an eight-pass groove weld (308L filler) was used. The biaxial stress measurements follow a recently developed approach, comprising a combination of contour method and slitting measurements, with a computation to determine the effects of out-of-plane stress on a thin slice. The measured longitudinal stress is highly tensile in the weld- and heat-affected zone, with a maximum around 450 MPa, and compressive stress toward the transverse edges around −250 MPa. The total transverse stress has a banded profile in the weld with highly tensile stress at the bottom of the plate (y = 0) of 400 MPa, rapidly changing to compressive stress (at y = 5 mm) of −200 MPa, then tensile stress at the weld root (y = 17 mm) and in the weld around 200 MPa, followed by compressive stress at the top of the weld at around −150 MPa. The results of the biaxial map compare well with the results of neutron diffraction measurements and output from a computational weld simulation.
Measured Biaxial Residual Stress Maps in a Stainless Steel Weld
Manuscript received November 21, 2014; final manuscript received February 17, 2015; published online September 3, 2015. Assoc. Editor: Akos Horvath.
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Olson, M. D., Hill, M. R., Patel, V. I., Muránsky, O., and Sisneros, T. (September 16, 2015). "Measured Biaxial Residual Stress Maps in a Stainless Steel Weld." ASME. ASME J of Nuclear Rad Sci. October 2015; 1(4): 041002. https://doi.org/10.1115/1.4029927
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